Gradle build: The time is now

Transcript

1. GRADLE BUILD:
   The time is now
   Alexey Bykov
   

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2. 2
   Alexey Bykov
   Senior Software Engineer
   6 years
   Google Developer Expert
   @nonewsss
   

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3. Dad what's that dark place
   over there?
   

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4. Goals
   Feel comfortable about
   

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5. Goals
   Feel comfortable about
   Improve build time
   

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6. 6
   Build time. Why?
   

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7. 7 Such sample not applies to Reddit or any other company I may worked at
   Build time. Why?
   ~ 10 engineers
   ~ 12 m
   ~ 20 builds (daily)
   

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8. 8 Such sample not applies to Reddit or any other company I may worked at
   Build time. Why?
   ~ 1000 builds
   ~ 200 h
   Weekly
   ~ 10 engineers
   ~ 12 m
   ~ 20 builds (daily)
   

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9. 9
   ~ 200 h
   

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10. 10
    Gradle starter
    

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11. 11
    Gradle starter
    Tasks
    Plugins
    Projects
    Build Lifecycle
    Caching
    Properties
    

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12. 12
    Gradle starter
    Tasks
    Plugins
    Projects
    Build Lifecycle
    Caching
    Properties
    

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13. 13
    What is a build?
    

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14. 14
    Build
    Sequence of steps to transform
    

    source code to a final product
    Step Step Step binary
    Src
    

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15. 15
    Steps == Tasks
    Task Task Task binary
    Src
    

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16. 16
    Tasks can be asynchronous
    Task
    Task
    Task
    binary
    Src
    

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17. 17
    Input & output
    Task
    

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18. 18
    Input & output
    Task
    @Input
    @InputFiles
    Input
    

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19. 19
    Input & output
    Task
    @Input
    @TaskAction
    @InputFiles
    Input
    

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20. 20
    Input & output
    Task
    @Input
    @OutputDirectory
    @TaskAction
    @InputFiles
    Input
    Output
    

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21. 21
    JavaCompile
    Java Version
    Example
    

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22. 22
    Example
    JavaCompile
    Java Version
    Source code
    

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23. 23
    Example
    JavaCompile
    Java Version
    Source code
    Compiler args
    Class files
    

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24. 24
    Tasks can be dependant
    Task
    Task
    Task
    Input
    Output
    Output
    Output
    

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25. 25
    Tasks can be cacheable
    Task
    @CacheableTask
    Input Output
    

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26. 26
    Tasks can be cacheable
    Task
    Input Output
    Cache
    @CacheableTask
    

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27. 27
    Tasks labels
    

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28. 28
    BUILD SUCCESSFUL in 6m 49s
    
    
    7960 actionable tasks: 130 executed, 371 from cache, 7459 up-to-date
    
    
    Tasks labels
    

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29. 29
    BUILD SUCCESSFUL in 6m 49s
    
    
    7960 actionable tasks: 130 executed, 371 from cache, 7459 up-to-date
    
    
    Tasks labels
    

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30. 30
    UP-TO-DATE
    Incremental cache
    

    applied
    

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31. 31
    FROM CACHE
    Build cache applied
    

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32. 32
    SKIPPED
    Excluded explicitly
    

    or has predicate
    

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33. 33
    NO SOURCE
    Can’t be executed,
    

    as there is no code
    

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34. 34
    EXECUTED (NO LABEL)
    Task run its action
    

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35. 35
    Task sources
    — Build script (kts/groovy)
    — Build Src
    — External (like plugin)
    

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36. 36
    Gradle starter
    Tasks
    Plugins
    Projects
    Build Lifecycle
    Caching
    Properties
    

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37. 37
    Project
    — Main Gradle API
    — Set of the tasks
    — 1 to 1 dependency with build.gradle
    

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38. 38
    Gradle starter
    Tasks
    Plugins
    Projects
    Build Lifecycle
    Caching
    Properties
    

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39. 39
    Plugins
    — Configuration of settings and tasks
    

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40. 40
    Plugins
    — Configuration of settings and tasks
    — Example:
    * Android Gradle Plugin (AGP)
    * Kotlin Gradle Plugin (KGP)
    

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41. 41
    Gradle starter
    Tasks
    Plugins
    Projects
    Build Lifecycle
    Caching
    Properties
    

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42. 42
    Build Lifecycle
    1. Configuration
    What to do? (Configure tasks)
    

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43. 43
    1. Configuration
    What to do? (Configure tasks)
    Build Lifecycle
    2. Execution
    Tasks
    

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44. 44
    Gradle starter
    Tasks
    Plugins
    Projects
    Build Lifecycle
    Caching
    Properties
    

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45. Caching
    Gradle
    

    Daemon
    JVM process
    

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46. Caching
    Gradle
    

    Daemon
    JVM process
    * Long-running process
    

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47. Caching
    Gradle
    

    Daemon
    JVM process
    * Long-running process
    * Enabled by default
    

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48. Caching
    Gradle
    

    Daemon
    JVM process
    * Long-running process
    * Enabled by default
    * Not stable on the CI
    

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49. Caching
    Gradle
    

    Daemon
    JVM process
    * Long-running process
    * Enabled by default
    * Not stable on the CI
    org.gradle.daemon=false
    #gradle.properties
    

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50. Caching
    Gradle
    

    Daemon
    JVM process
    In memory
    

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51. Caching
    Configuration
    

    cache
    

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52. Caching
    Configuration
    

    cache
    * Experimental
    

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53. Caching
    Configuration
    

    cache
    * Experimental
    * project/.gradle/configuration-cache
    

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54. Caching
    Configuration
    

    cache
    * Experimental
    * project/.gradle/configuration-cache
    * Works based on input/output
    

    principle
    

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55. Caching
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    In memory In project
    

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56. Caching
    Incremental
    

    cache
    

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57. Caching
    Incremental
    

    cache
    * Short-term cache
    

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58. Caching
    Incremental
    

    cache
    * Short-term cache
    * Stores in build folders
    

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59. Caching
    Incremental
    

    cache
    * Short-term cache
    * Can be easily invalidated
    * Stores in build folders
    

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60. Caching
    In memory In project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    

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61. Caching
    Build
    

    cache
    

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62. Caching
    Build
    

    cache
    * Long-term cache
    

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63. Caching
    Build
    

    cache
    * Long-term cache
    * ~.gradle/caches/build-cache1/
    

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64. Caching
    

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65. 65
    Example
    JavaCompile
    Java Version
    Source code
    Compiler args
    Class files
    

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66. 66
    Example
    $hash
    $hash
    $hash
    Java Version
    Source code
    Compiler args
    

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67. 67
    Example
    $hash
    $hash
    $hash
    CacheKey
    

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68. 68
    Example
    $hash
    $hash
    $hash
    CacheKey
    ffb08d41a85389bbbe6e8bbe480f0560
    

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69. Build cache
    

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70. 70
    Example
    $hash
    $hash
    $hash
    CacheKey
    Build
    

    cache
    

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71. 71
    Example
    $hash
    $hash
    $hash
    CacheKey
    Build
    

    cache
    

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72. 72
    Example
    $hash
    $hash
    $hash
    CacheKey
    Build
    

    cache
    JavaCompile
    Class files
    

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73. Build cache
    Each CacheKey in build-cache
    

    is a compressed byte-code
    

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74. Caching
    Local
    In memory In project Out project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    Build
    

    cache
    

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75. Caching
    Dependency
    

    cache
    

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76. Caching
    Dependency
    

    cache
    * .jars or *.aars
    

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77. Caching
    Dependency
    

    cache
    * .jars or *.aars
    ~./gradle/cache/modules-2
    

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78. Caching
    In memory In project Out project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    Build
    

    cache
    Dependency
    

    cache
    

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79. Caching
    Local
    In memory In project Out project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    Build
    

    cache
    Dependency
    

    cache
    

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80. Caching
    Local
    In memory In project Out project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    Build
    

    cache
    Dependency
    

    cache
    Remote
    

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81. Caching
    Local
    In memory In project Out project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    Build
    

    cache
    Dependency
    

    cache
    Build
    

    cache
    Remote
    

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82. Remote caching
    Build
    

    cache
    Stores on remote server
    

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83. Remote caching
    Build
    

    cache
    Stores on remote server
    Copies to the local cache
    

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84. Caching
    Local
    In memory In project Out project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    Build
    

    cache
    Dependency
    

    cache
    Build
    

    cache
    Remote
    

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85. Caching
    Local
    In memory In project Out project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    Build
    

    cache
    Dependency
    

    cache
    Build
    

    cache
    Proxy
    Remote
    

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86. Jitpack was down for
    
    
    ~2 days
    https://github.com/jitpack/jitpack.io/issues/5337
    

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87. Remote Caching
    Proxy
    Your own maven
    

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88. Remote Caching
    Proxy
    Your own maven
    Which syncs data
    

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89. Caching
    Local
    In memory In project Out project
    Gradle
    

    Daemon
    JVM process
    Configuration
    

    cache
    Incremental
    

    cache
    Build
    

    cache
    Dependency
    

    cache
    Build
    

    cache
    Proxy
    Remote
    

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90. 90
    Cache:Conslusion
    

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91. 91
    Incremental applied
    Incremental cache
    Input
    Action
    

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92. 92
    Incremental applied
    Incremental cache
    Input
    Action
    UP-TO-DATED
    

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93. 93
    Incremental applied
    Incremental cache
    Input
    Action
    

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94. 94
    Build cache applied
    Incremental cache
    Input
    Action
    Build Cache
    FROM-CACHE
    

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95. 95
    No cache
    Incremental cache
    Input
    Action
    Build Cache
    

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96. 96
    No cache
    Incremental cache
    Input
    Build Cache
    NO LABEL
    Action
    

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97. 97
    Gradle starter
    Tasks
    Plugins
    Projects
    Build Lifecycle
    Caching
    Properties
    

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98. 98
    Properties
    File to easily configure Gradle
    

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99. 99
    Properties
    File to easily configure Gradle
    Can be:
    ~./gradle.properties
    Project/gradle.properties
    

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100. 100
     Properties
     File to easily configure Gradle
     Can be:
     ~./gradle.properties
     Project/gradle.properties
     Gradle merge them
     

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101. 101
     Properties
     File to easily configure Gradle
     Can be:
     ~./gradle.properties
     Project/gradle.properties
     Gradle merge them
     Global > Local
     

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102. 102
     Measure!
     

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104. 104
     Measure!
     Locally?
     

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105. 105
     Measure!
     Locally?
     * Manually?
     * Automatically?
     

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106. 106
     Measure!
     Locally?
     * Manually?
     * Automatically?
     CI?
     

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107. 107
     Measure!
     Locally?
     * Manually?
     * Automatically?
     CI?
     * Incremental?
     

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108. 108
     Measure!
     Locally?
     * Manually?
     * Automatically?
     CI?
     * Incremental?
     * Clean build?
     

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109. 109
     Measure!
     Locally?
     * Manually?
     * Automatically?
     CI?
     * Incremental?
     * Clean build?
     Where to send?
     

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110. 110
     Measure!
     Locally?
     * Manually?
     * Automatically?
     CI?
     * Incremental?
     * Clean build?
     Where to send?
     HOW???
     

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111. 111
     1. Locally
     

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112. 112
     1. Locally
     ~ daily, on a laptop
     

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113. 113
     1. Locally
     ~ daily, on a laptop
     ~ incremental build
     

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114. 114
     1. Locally
     ~ daily, on a laptop
     ~ incremental build
     ~ incremental changes
     

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115. 115
     1. Locally
     ~ daily, on a laptop
     ~ incremental build
     ~ incremental changes
     ~ clean build
     

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116. 116
     1. Locally
     ~ daily, on a laptop
     ~ incremental build
     ~ incremental changes
     ~ clean build
     ~ configuration
     

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117. 117
     1. Locally
     ~ daily, on a laptop
     ~ incremental build
     ~ incremental changes
     ~ clean build
     ~ no external monitor
     ~ configuration
     

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118. 118
     1. Locally
     ~ daily, on a laptop
     ~ incremental build
     ~ incremental changes
     ~ clean build
     ~ no external monitor
     ~ no android studio
     ~ configuration
     

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119. 119
     1. Locally
     ~ daily, on a laptop
     ~ incremental build
     ~ incremental changes
     ~ clean build
     ~ no external monitor
     ~ no android studio
     ~ cli
     ~ configuration
     

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120. 120
     Collect automatically
     

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121. 121
     Collect automatically
     ~ Only if you have > 20 engineers
     

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122. 122
     Collect automatically
     ~ Only if you have > 20 engineers
     ~ Tool: Talailot
     https://github.com/cdsap/Talaiot
     

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123. 123
     2. CI
     

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124. 124
     2. CI
     Do it together with
     local measurement
     

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125. 125
     3. How?
     

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126. 126
     3. How?
     ~ Build Scan
     

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127. 127
     3. How?
     ~ Build Scan
     Most powerful
     Good visualisation
     Shares build outside
     

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128. 128
     3. How?
     

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129. 129
     3. How?
     ~ Build Scan
     ~ Gradle profiler
     

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130. 130
     Gradle profiler
     https://github.com/gradle/gradle-profiler
     ~ brew install gradle-profiler
     
     
     

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131. 131
     Scenario
     no_op {
     
     
     tasks = [“assembleDebug"]
     
     
     }
     
     
     #incremental
     

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132. 132
     Scenario
     #build cache
     clean_no_op {
     
     
     tasks = ["clean", "assembleDebug"]
     
     
     }
     
     
     no_op {
     
     
     tasks = [“assembleDebug"]
     
     
     }
     
     
     #incremental
     

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133. 133
     Scenario
     #build cache
     clean_no_op {
     
     
     tasks = ["clean", "assembleDebug"]
     
     
     }
     
     
     no_op {
     
     
     tasks = [“assembleDebug"]
     
     
     }
     
     
     #incremental
     incremental_changes {
     
     
     tasks = ["assembleDebug"]
     
     
     apply-abi-change-to = “sample/src/main/…TeamsViewModel.kt”
     
     
     }
     

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134. 134
     Scenario
     no_op {
     
     
     tasks = [“assembleDebug"]
     
     
     }
     
     
     clean_no_op {
     
     
     tasks = ["clean", "assembleDebug"]
     
     
     }
     
     
     incremental_changes {
     
     
     tasks = ["assembleDebug"]
     
     
     apply-abi-change-to = "sample/src/main/java/com/alexbykov/oknetwork/data/TeamsViewModel.kt"
     
     
     }
     #incremental
     #build cache
     #incremental changes
     

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135. 135
     Scenario
     gradle-profiler --benchmark \
     

     --scenario-file profiler-scenario
     

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136. 136
     Scenario
     gradle-profiler --benchmark \
     

     --scenario-file profiler-scenario \
     --measure-config-time
     

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137. 137
     Output
     

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138. 138
     CSV
     

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139. 139
     Configuration time
     

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140. 140
     After
     ~ Parse it
     

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141. 141
     After
     ~ Parse it
     ~ Send it to somewhere..
     

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142. 142
     Somewhere
     ~ Influx db
     

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143. 143
     Somewhere
     ~ Influx db
     ~ Elastic search
     

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144. 144
     Somewhere
     ~ Influx db
     ~ Elastic search
     ~ Graphite
     …… or…
     

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145. 145
     Google sheet
     

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146. 146
     Google sheet + Forms
     ~ Link sheet with forms
     

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147. 147
     Google sheet + Forms
     ~ Link sheet with forms
     ~ Know form ids and send
     shorturl.at/mzNOY
     

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148. 148
     Let’s improve!
     

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149. 149
     Disable Jetifier
     

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150. 150
     Disable Jetifier
     ~ appsupport -> androidx
     

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151. 151
     Disable Jetifier
     ~ appsupport -> androidx
     ~ ./gradlew checkJetifier
     

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152. 152
     gradle.properties
     android.enableJetifier=false
     
     
     

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153. 153
     Non-Transitive R
     classes
     

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154. 154
     Problem
     app
     feature1
     Feature3
     feature2
     

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155. 155
     Problem
     app
     feature1
     Feature3
     feature2
     R class
     R class
     R class
     R class
     

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156. 156
     Content merging
     app
     feature1
     Feature3
     feature2
     R class (app, f1,f2,f3)
     R class (f2, f3)
     R class (f2, f3)
     R class (f1)
     

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157. 157
     Non-transitive
     app
     feature1
     Feature3
     feature2 R class (f2)
     R class (f3)
     R class (app)
     R class (f1)
     

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     Non-transitive
     ~ R.strings -> YourModule.R.strings
     
     
     ~ All resources
     
     
     

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     gradle.properties
     android.nonTransitiveRClass=true
     
     
     shorturl.at/gK567
     

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     Virtual file system
     

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161. 161
     Virtual file system
     shorturl.at/bzIJO
     org.gradle.vfs.watch=true
     

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     Don’t use buildSrc folder
     

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     ~ KTS & Dependency
     
     
     Most common use-case
     

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     Problems
     ~ Incremental cache invalidated
     
     
     

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     ~ Build cache invalidated
     
     
     Problems
     ~ Incremental cache invalidated
     
     
     shorturl.at/eruJM
     NO LABEL
     

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     Version Catalog
     shorturl.at/oxY02
     

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167. 167
     Version Catalog
     ~ No cache issues
     

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168. 168
     Version Catalog
     ~ No cache issues
     ~ .toml file (can be standalone)
     

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169. 169
     Version Catalog
     ~ No cache issues
     ~ Bundling dependencies
     
     
     ~ .toml file (can be standalone)
     

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     Version Catalog
     [versions]
     
     
     groovy = "3.0.5"
     
     
     checkstyle = "8.37"
     

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     Version Catalog
     [libraries]
     
     
     groovy-core = { module = "org.codehaus.groovy:groovy", version.ref =
     "groovy" }
     
     
     groovy-json = { module = "org.codehaus.groovy:groovy-json",
     version.ref = "groovy" }
     [versions]
     
     
     groovy = "3.0.5"
     
     
     checkstyle = "8.37"
     

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     Bundling
     [bundles]
     
     
     groovy = ["groovy-core", "groovy-json", "groovy-
     nio"]
     
     
     

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     Bundling
     [bundles]
     
     
     groovy = ["groovy-core", "groovy-json", "groovy-nio"]
     
     
     implementation libs.groovy
     

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     Focus plugin
     

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     Focus plugin
     shorturl.at/hioEM
     ~ Allows to manage settings.gradle
     

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176. 176
     Focus plugin
     ~ Allows to manage settings.gradle
     ~ Mostly useful in monorepo
     shorturl.at/hioEM
     

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     Java version
     

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     Java version
     ~ Have Java 8? —> Java 11
     

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179. 179
     Java version
     ~ Have Java 8? —> Java 11
     ~ Have Java 11 —> A/B tests & experiments
     

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180. 180
     Tune gradle properties
     

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181. 181
     Tune gradle properties
     ~ Always do A/B tests with GC
     -XX:+UseParallelGC
     -XX:+UseG1GC (default)
     

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182. 182
     Tune gradle properties
     ~ Always do A/B tests with GC
     ~ A/B tests with heap size
     org.gradle.jvmargs=-Xmx..G
     kotlin.daemon.jvmargs=-Xmx..g
     

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183. 183
     Tune gradle properties
     ~ Always do A/B tests with GC
     ~ A/B tests with heap size
     ~ Choose proper one for you
     1. Kotlin daemon > Gradle Daemon
     2. Kotlin daemon < Gradle Daemon
     3. Kotlin daemon == Gradle Daemon
     

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184. 184
     Some ideas to test
     android.disableAutomaticComponentCreation=true
     
     
     android.defaults.buildfeatures.buildconfig=false
     
     
     android.defaults.buildfeatures.aidl=false
     
     
     android.defaults.buildfeatures.renderscript=false
     
     
     android.defaults.buildfeatures.resvalues=false
     
     
     android.defaults.buildfeatures.shaders=false
     

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185. 185
     Never apply new
     properties without
     testing!
     

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186. 186
     kapt —> KSP
     

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187. 187
     kapt —> KSP
     ~25%
     No stubs generation
     

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188. 188
     KSP Support
     ~ Room
     ~ Moshi
     ~ Glide
     ~ Hilt
     ~ Dagger2
     ~ Anvil
     

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189. 189
     Hilt problem
     

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190. 190
     Hilt problem
     ~ Works based on subcomponents
     ~ Subcomponents generates
     

     in parent component
     

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191. 191
     Modularisation
     

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192. 192
     Modularisation
     ~ api/impl
     

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193. 193
     Modularisation
     ~ api/impl
     ~ Restrict merging to app module
     

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194. 194
     https://github.com/danger/danger
     Danger!
     

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195. 195
     Parallel
     

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196. 196
     Parallel
     org.gradle.parallel=true
     

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197. 197
     Parallel
     org.gradle.parallel=true
     Workers count == CPU cores
     

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198. 198
     Apply configuration
     cache
     

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199. 199
     Configuration cache
     org.gradle.unsafe.configuration-cache=true
     
     
     org.gradle.unsafe.configuration-cache-problems=warn
     shorturl.at/buUVZ
     

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200. 200
     Configuration time
     3 minutes
     ~10 seconds
     Before After
     

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201. 201
     Project isolation (future)
     

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202. 202
     Project isolation (future)
     shorturl.at/gyJRV
     org.gradle.unsafe.isolated-projects=true
     

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203. 203
     Build Cache
     

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204. 204
     Build Cache
     org.gradle.caching=true
     

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205. 205
     Remote build cache
     shorturl.at/LQT17
     

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206. 206
     Remote build cache
     Remote Build
     

     cache
     Local machine
     Mr CI
     

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207. 207
     Remote build cache
     Remote Build
     

     cache
     Local machine
     Mr CI
     Read/W
     rite
     

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208. 208
     Remote build cache
     Remote Build
     

     cache
     Local machine
     Mr CI
     Read/W
     rite
     Read
     

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209. Preventing cache misses
     ~ shorturl.at/CMWZ7
     ~ shorturl.at/EMNSU
     ~ shorturl.at/vY389
     

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210. Build cache—fix plugin
     shorturl.at/ckls3
     

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211. 211
     Gradle doctor plugin
     shorturl.at/abBOS
     

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212. 212
     Gradle best practices
     shorturl.at/cjEQX
     

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213. 213
     Other
     ~ Extract native to libraries
     ~ Don’t use flavors and build variants
     ~ Always test an impact before merging
     ~ Use latest tools
     ~ Keep things under control
     

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214. 214
     Gradle enterprise
     https://gradle.com/roi-calculator/
     

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215. 215
     Official guides
     shorturl.at/dfhw2
     shorturl.at/EGKQ4
     

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216. 216
     Build time with all of this
     ~12 minutes
     ~2 minutes
     Before After
     

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217. 217
     Learn Gradle
     https://gradle.com/training/
     ~ Trainings:
     https://blog.gradle.org/how-gradle-works-1
     ~ Gradle blog:
     ~ Jendrik Johannes: https://www.youtube.com/@jjohannes
     

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218. 218
     Slides
     @nonewsss
     

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